“Half the time he is [excited], he wants to stroke his head and help feed him — then the other half of the time he tries to smother him,” the Teenage Mutant Ninja Turtles star joked to PEOPLE at a Wednesday screening of her film in New York City.

The actors are keeping their eye on both boys, as Noah has been known to experiment target practice with his toys. “He’s good most of the time, but then every once in a while, when we’re not looking and we hear the baby cry, we realize he’s thrown a toy at his face,” Fox, 28, says.Read More

Now, the mom of two under two — Bodhi Ransom, 4 months, and Noah Shannon, 21 months — is trying to balance raising both boys. Despite her best efforts, the hands-on mom can’t help but feel torn in two directions.

“Do they each understand how special they are and how much I love them? And are they understanding that they’re unique? It’s hard to make each one feel like an individual when you have to raise them together and manage them together all of the time.”

And with her first trimester taking place right in the thick of filming, Fox admits any of her free time was often spent snacking — and keeping the morning sickness at bay.

“The producers would come see me in the morning in the makeup trailer and I would be clinging to a box of saltines. We kept pickles in the refrigerator for me and I was just constantly on the verge of vomiting.”

“I can smell everything! I usually can smell foul scents, I pick them up from far away,” Fox, who is also working on Avon Foundation for Women’s global social media campaign, #SeeTheSigns campaign, which will educate the public on recognizing signs of domestic violence, tells PEOPLE.

“[Brian’s] constantly saying, ‘I don’t smell that, you are crazy, that’s not in the house,’ and I’m saying, ‘I promise you, it is somewhere.'”Read More

“I can confirm Megan is expecting her second child with her husband Brian,” the actress’ rep confirms to PEOPLE. “They are both very happy.”

The couple welcomed their 10-month-old son, Noah Shannon, last September. Green, 40, is also dad to 11-year-old son Kassius Lijah from his prior relationship with Vanessa Marcil.

“All I wanted to do my whole, whole life was have a baby and, now, I’ve finally done it,” the Teenage Mutant Ninja Turtles star, 27, said in March. “I just want to give Noah as much of myself as I can.”